Integrating in 
Dream'lineTM 
the powerful
 
proprietary
technologies, 
EvosightTM and    L-ShufflingTM
,
Proteus offers you a outstanding opportunity to
develop tailor-made proteins 
via unique and
flexible services.
Rapidly evaluate in parallel a very large panel of
cell-based and cell-free expression systems
and conditions
 for your genes.
Obtain proteins in 
scaleable production system
from research scale toward process development.
Dramatic  50-fold  improvement  of  the  activity  of  a  protein  using  a  combination  of
EvoSightTM and L-ShufflingTM. The figure shows the actual distribution of the activity
of  the  clones  generated  by  the  third  round  of  L-ShufflingTM  compared  with  the
starting enzyme (wild type : "WT"). Most clones exhibit an activity higher than the
original WT enzyme.
CONTACT PSI : Emmanuel MAILLE
Parc Georges Besse - 70, allée Graham Bell
30000 - Nimes  France
Tel: +33(0)466 70 64 67 - Fax: +33(0)466 70 64 60
E-mail : psi@proteus.fr
Dream'line
T M
 : Directed Evolution Services
Prod'line
T M
 : Protein Production Services
Cell-based
expression
Your genes
Cell-free
expression
EXPRESSION PROFILING
An amazing panel
of more than 200 expression
 systems and conditions
Cell-based small
scale production
Cell-free
customized kits
LAB SCALE PRODUCTION
SCALE-UP TOWARD INDUSTRIALIZATION
Fermentation, downstream processing,
purification, QC
L-Shuffling
TM
Random genetic
recombination
IMPROVED VARIANTS
Single gene
Evosight
TM
Reasoned random
mutagenesis
OPTIMAL
LIBRARY OF
MUTANT GENES
Family of genes
Parental genes
Rapidly create and optimize novel proteins
0
10
20
30
40
50
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2nd round of 
L-Shuffling
TM
3rd round of L-Shuffling
TM 
 50-fold increase
1st round of 
L-Shuffling
TM
WT
EvoSight
TM